package com.zhou.cloud.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
public class RedisConfig  {

	// 1.项目启动时此方法先被注册成bean被spring管理,如果没有这个bean，
	// 则redis可视化工具中的中文内容（key或者value）都会以二进制存储，不易检查。
	@Bean
	public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) {
		StringRedisTemplate template = new StringRedisTemplate(factory);

		//set key serializer
		StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();


		Jackson2JsonRedisSerializer<? extends Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<Object>(Object.class);
		ObjectMapper mapper = new ObjectMapper();
		//>>>>>>>>>>>>>
		/*
		 * 测试证明：如果没有此2行代码，会导致序列化对象存储到redis 不成功，只能换成MAP形式存储
		 */
		mapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
		mapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
		//>>>>>>>>>>>>>
		jackson2JsonRedisSerializer.setObjectMapper(mapper);

		//使用StringRedisSerializer来序列化和反序列化redis的key值
		template.setKeySerializer(stringRedisSerializer);
		template.setHashKeySerializer(stringRedisSerializer);
		template.setValueSerializer(jackson2JsonRedisSerializer);
		template.afterPropertiesSet();
		return template;
	}

	@Bean
	public StringRedisTemplate stringRedisTemplate(RedisConnectionFactory factory) {
		StringRedisTemplate stringRedisTemplate = new StringRedisTemplate();
		stringRedisTemplate.setConnectionFactory(factory);
		return stringRedisTemplate;
	}
}
